LLAMA : nuclear stellar properties of Swift-BAT AGN and matched inactive galaxies
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/178135 |
Resumo: | In a complete sample of local 14–195 keV selected active galactic nuclei (AGNs) and inactive galaxies, matched by their host galaxy properties, we study the spatially resolved stellar kinematics and luminosity distributions at near-infrared wavelengths on scales of 10–150 pc, using SINFONI on the VLT. In this paper, we present the first half of the sample, which comprises 13 galaxies, eight AGNs and five inactive galaxies. The stellar velocity fields show a disc-like rotating pattern, for which the kinematic position angle is in agreement with the photometric position angle obtained from large scale images. For this set of galaxies, the stellar surface brightness of the inactive galaxy sample is generally comparable to the matched sample of AGN, but extends to lower surface brightness. After removal of the bulge contribution, we find a nuclear stellar light excess with an extended nuclear disc structure, which exhibits a size-luminosity relation. While we expect the excess luminosity to be associated with a dynamically cooler young stellar population, we do not typically see a matching drop in dispersion. This may be because these galaxies have pseudo-bulges in which the intrinsic dispersion increases towards the centre. And although the young stars may have an impact in the observed kinematics, their fraction is too small to dominate over the bulge and compensate the increase in dispersion at small radii, so no dispersion drop is seen. Finally, we find no evidence for a difference in the stellar kinematics and nuclear stellar luminosity excess between these active and inactive galaxies. |
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Lin, Ming-YiRiffel, RogérioMüller, Allan SchnorrStorchi-Bergmann, ThaisaVeilleux, Sylvain2018-05-11T02:33:37Z20180035-8711http://hdl.handle.net/10183/178135001062402In a complete sample of local 14–195 keV selected active galactic nuclei (AGNs) and inactive galaxies, matched by their host galaxy properties, we study the spatially resolved stellar kinematics and luminosity distributions at near-infrared wavelengths on scales of 10–150 pc, using SINFONI on the VLT. In this paper, we present the first half of the sample, which comprises 13 galaxies, eight AGNs and five inactive galaxies. The stellar velocity fields show a disc-like rotating pattern, for which the kinematic position angle is in agreement with the photometric position angle obtained from large scale images. For this set of galaxies, the stellar surface brightness of the inactive galaxy sample is generally comparable to the matched sample of AGN, but extends to lower surface brightness. After removal of the bulge contribution, we find a nuclear stellar light excess with an extended nuclear disc structure, which exhibits a size-luminosity relation. While we expect the excess luminosity to be associated with a dynamically cooler young stellar population, we do not typically see a matching drop in dispersion. This may be because these galaxies have pseudo-bulges in which the intrinsic dispersion increases towards the centre. And although the young stars may have an impact in the observed kinematics, their fraction is too small to dominate over the bulge and compensate the increase in dispersion at small radii, so no dispersion drop is seen. Finally, we find no evidence for a difference in the stellar kinematics and nuclear stellar luminosity excess between these active and inactive galaxies.application/pdfengMonthly notices of the royal astronomical society. Oxford. Vol. 473, no. 4 (Feb. 2018), p. 4582-4611Galaxias seyfertGaláxias ativasCinemáticaNucleo galaticoFotometria astronômicaGalaxies: kinematics and dynamicsGalaxies: photometry – galaxies: SeyfertGalaxies: spiralLLAMA : nuclear stellar properties of Swift-BAT AGN and matched inactive galaxiesEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001062402.pdf001062402.pdfTexto completo (inglês)application/pdf10537135http://www.lume.ufrgs.br/bitstream/10183/178135/1/001062402.pdf6abf65ca1db4f01ecf35ef9386f6feeeMD51TEXT001062402.pdf.txt001062402.pdf.txtExtracted Texttext/plain99570http://www.lume.ufrgs.br/bitstream/10183/178135/2/001062402.pdf.txt5b85fe0149726a5b9cd5c4442b2e9657MD5210183/1781352023-07-20 03:36:47.092566oai:www.lume.ufrgs.br:10183/178135Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-20T06:36:47Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
LLAMA : nuclear stellar properties of Swift-BAT AGN and matched inactive galaxies |
title |
LLAMA : nuclear stellar properties of Swift-BAT AGN and matched inactive galaxies |
spellingShingle |
LLAMA : nuclear stellar properties of Swift-BAT AGN and matched inactive galaxies Lin, Ming-Yi Galaxias seyfert Galáxias ativas Cinemática Nucleo galatico Fotometria astronômica Galaxies: kinematics and dynamics Galaxies: photometry – galaxies: Seyfert Galaxies: spiral |
title_short |
LLAMA : nuclear stellar properties of Swift-BAT AGN and matched inactive galaxies |
title_full |
LLAMA : nuclear stellar properties of Swift-BAT AGN and matched inactive galaxies |
title_fullStr |
LLAMA : nuclear stellar properties of Swift-BAT AGN and matched inactive galaxies |
title_full_unstemmed |
LLAMA : nuclear stellar properties of Swift-BAT AGN and matched inactive galaxies |
title_sort |
LLAMA : nuclear stellar properties of Swift-BAT AGN and matched inactive galaxies |
author |
Lin, Ming-Yi |
author_facet |
Lin, Ming-Yi Riffel, Rogério Müller, Allan Schnorr Storchi-Bergmann, Thaisa Veilleux, Sylvain |
author_role |
author |
author2 |
Riffel, Rogério Müller, Allan Schnorr Storchi-Bergmann, Thaisa Veilleux, Sylvain |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Lin, Ming-Yi Riffel, Rogério Müller, Allan Schnorr Storchi-Bergmann, Thaisa Veilleux, Sylvain |
dc.subject.por.fl_str_mv |
Galaxias seyfert Galáxias ativas Cinemática Nucleo galatico Fotometria astronômica |
topic |
Galaxias seyfert Galáxias ativas Cinemática Nucleo galatico Fotometria astronômica Galaxies: kinematics and dynamics Galaxies: photometry – galaxies: Seyfert Galaxies: spiral |
dc.subject.eng.fl_str_mv |
Galaxies: kinematics and dynamics Galaxies: photometry – galaxies: Seyfert Galaxies: spiral |
description |
In a complete sample of local 14–195 keV selected active galactic nuclei (AGNs) and inactive galaxies, matched by their host galaxy properties, we study the spatially resolved stellar kinematics and luminosity distributions at near-infrared wavelengths on scales of 10–150 pc, using SINFONI on the VLT. In this paper, we present the first half of the sample, which comprises 13 galaxies, eight AGNs and five inactive galaxies. The stellar velocity fields show a disc-like rotating pattern, for which the kinematic position angle is in agreement with the photometric position angle obtained from large scale images. For this set of galaxies, the stellar surface brightness of the inactive galaxy sample is generally comparable to the matched sample of AGN, but extends to lower surface brightness. After removal of the bulge contribution, we find a nuclear stellar light excess with an extended nuclear disc structure, which exhibits a size-luminosity relation. While we expect the excess luminosity to be associated with a dynamically cooler young stellar population, we do not typically see a matching drop in dispersion. This may be because these galaxies have pseudo-bulges in which the intrinsic dispersion increases towards the centre. And although the young stars may have an impact in the observed kinematics, their fraction is too small to dominate over the bulge and compensate the increase in dispersion at small radii, so no dispersion drop is seen. Finally, we find no evidence for a difference in the stellar kinematics and nuclear stellar luminosity excess between these active and inactive galaxies. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-05-11T02:33:37Z |
dc.date.issued.fl_str_mv |
2018 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/178135 |
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0035-8711 |
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001062402 |
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0035-8711 001062402 |
url |
http://hdl.handle.net/10183/178135 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Monthly notices of the royal astronomical society. Oxford. Vol. 473, no. 4 (Feb. 2018), p. 4582-4611 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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